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Vishay General Semiconductor - Diodes Division VTVS47ASMF-HM3-08
- Part No.:
- VTVS47ASMF-HM3-08
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Category:
- TVS Diodes
- Package:
- DO-219AB
- Datasheet:
-
VTVS47ASMF-HM3-08.pdf
- Description:
- TVS DIODE 46.8VWM 80VC DO219AB
- Quantity:
- Payment:
- Shipping:
Inventory:2,635
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Product details
Overview
VTVS47ASMF-HM3-08 from Vishay Semiconductors is a unidirectional 400 W TransZorb® transient voltage suppressor diode in SMF (DO-219AB) package, designed for ESD and surge protection on low-voltage DC lines. It features a 46.8 V stand-off voltage (VRWM), 53.2–58.8 V reverse breakdown voltage (VBR at IT = 1 mA), and clamps to ≤80 V at 4.76 A peak pulse current (10/1000 μs), with ±30 kV IEC 61000-4-2 contact/air discharge rating.
For engineers reviewing the VTVS47ASMF-HM3-08 datasheet, VTVS47ASMF-HM3-08 pinout, VTVS47ASMF-HM3-08 application, or VTVS47ASMF-HM3-08 equivalent, key selection criteria include its 400 W peak pulse power, 293 pF typical capacitance at 0 V, 175 °C max junction temperature, halogen-free construction, and AEC-Q101 qualification suitability for automotive infotainment and ADAS interface lines.
Technical Context
This TVS diode operates as a unidirectional clamping device, triggering into avalanche conduction when reverse voltage exceeds its 53.2–58.8 V breakdown range. Its low 20 K/W thermal resistance (junction-to-lead) enables effective heat dissipation during transient events, supporting reliable operation up to 175 °C junction temperature.
The device delivers precise ESD immunity per IEC 61000-4-2 (±30 kV contact/air), with fast response time enabled by "Low-Noise" technology. Its 293 pF capacitance at 0 V and 1.08 mm height make it suitable for high-speed data line protection where signal integrity and board space are critical.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Peak Pulse Power | 400 W (10/1000 μs waveform; sustains repeated surges without degradation) |
| Stand-off Voltage (VRWM) | 46.8 V (maximum continuous reverse operating voltage before leakage exceeds 0.05 μA) |
| Breakdown Voltage (VBR) | 53.2–58.8 V at IT = 1 mA (tight ±5 % tolerance ensures predictable turn-on threshold) |
| Clamping Voltage (VC) | ≤80 V at IPPM = 4.76 A (limits downstream IC voltage stress during transients) |
| Capacitance (CD) | 293 pF at VR = 0 V, f = 1 MHz (low enough for USB 2.0 and CAN FD signal lines) |
| ESD Rating | ±30 kV contact & air discharge (IEC 61000-4-2; eliminates need for external ESD stages) |
| Operating Temperature | −55 °C to +175 °C (supports under-hood automotive and industrial environments) |
| Package | SMF (DO-219AB); 3.9 × 1.9 × 1.08 mm (compatible with SOD-123W footprint; reflow/wave solderable) |
Pinout & Package
SMF (DO-219AB) package: surface-mount, low-profile (1.08 mm height), cathode-marked with bar; compatible with standard SOD-123W PCB footprints and automated assembly processes.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode | Forward current path / reference node | Connected to protected line's ground or low-side return; defines unidirectional clamping polarity |
| Cathode | Transient voltage clamp output | Connected to protected signal line; conducts avalanche current to anode during overvoltage events |
Key Features
| Feature | Design Value |
|---|---|
| 400 W peak pulse power | Handles high-energy transients (e.g., ISO 7637-2 pulse 1/2a/5a) without failure in automotive power nets |
| ±30 kV ESD protection | Meets IEC 61000-4-2 Level 4 without additional ESD components on USB, HDMI, or sensor interfaces |
| 293 pF capacitance | Minimizes signal distortion on 480 Mbps USB 2.0 and 5 Mbps CAN FD buses |
| AEC-Q101 qualified option | Validated for automotive use including infotainment, body control modules, and ADAS camera links |
| Halogen-free & RoHS-compliant | Complies with automotive OEM material declarations (e.g., GMW3172, Ford WSS-M99P9999-A1) |
| MSL Level 1 moisture sensitivity | Enables unlimited floor life and standard reflow without baking prior to assembly |
Applications
| Automotive Infotainment Display Interface | Industrial CAN FD Node Protection |
|---|---|
|
Use Scenario: Protecting LVDS or FPD-Link III video data lines between head unit and TFT display against load dump and ESD. IC Role / Device Role / Timing Role: Unidirectional clamping TVS placed at display connector to shunt transients before reaching serializer/deserializer ICs. Use Value: Prevents pixel corruption and display reset caused by 400 W surges while maintaining <300 pF loading for 1.5 Gbps video timing integrity. |
Use Scenario: Safeguarding CAN FD transceivers in PLC backplane modules exposed to relay switching noise and cable coupling. IC Role / Device Role / Timing Role: Line-side TVS on CAN_H/CAN_L differential pair, referenced to local ground plane. Use Value: Clamps 80 V spikes within nanoseconds to preserve 5 Mbps bit timing and prevent transceiver latch-up during factory ESD events. |
| USB 2.0 Port in Medical Handheld Device | Automotive Camera Module Power Input |
|
Use Scenario: ESD protection on D+/D− lines of portable ultrasound or patient monitor USB ports subjected to frequent clinical handling. IC Role / Device Role / Timing Role: Bidirectional-capable unidirectional TVS (anode grounded) guarding high-speed data lanes. Use Value: Delivers ±30 kV contact discharge immunity without degrading 480 Mbps eye diagram margin due to 293 pF capacitance. |
Use Scenario: Suppressing load dump transients on 12 V power input of rear-view camera modules mounted in vehicle trunks. IC Role / Device Role / Timing Role: Primary overvoltage clamp on power rail upstream of DC/DC converter and image sensor. Use Value: Withstands 400 W pulses at 175 °C ambient, preventing thermal runaway and ensuring ASIL-B compliant camera uptime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar transient voltage suppression applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMAJ47A-E3/57T | Same 47 V nominal VRWM but SMA package (DO-214AC); 600 W Pppm; 350 pF capacitance | Larger footprint (4.5 × 2.7 mm); higher capacitance limits use on >100 Mbps lines | Select for higher power margin where board space allows and lower capacitance is not required |
| 1.5SMC47A | 47 V VRWM, 600 W Pppm, DO-214AB package; 400 pF capacitance; no AEC-Q101 option | Higher thermal resistance (30 K/W); not qualified for automotive under-hood use | Prefer for cost-sensitive industrial power supply rails where AEC-Q101 and compact size are not mandatory |
Compared with SMAJ47A-E3/57T and 1.5SMC47A, VTVS47ASMF-HM3-08 offers superior board-level integration (3.9 × 1.9 mm), lower capacitance for high-speed data, and AEC-Q101 qualification-making it optimal for space-constrained automotive and medical electronics requiring robust, validated ESD resilience.
Availability
VTVS47ASMF-HM3-08 is available at Aetrix Electronics and suitable for automotive infotainment systems, industrial CAN FD networks, and medical USB 2.0 interfaces requiring stable component supply across long production lifecycles.
Supply support for VTVS47ASMF-HM3-08 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Vishay Semiconductors is a global leader in discrete semiconductors, specializing in high-reliability diodes, MOSFETs, optoelectronics, and passive components for automotive, industrial, and computing markets.
The VTVS eSMP® Series targets high-density transient protection in automotive and industrial electronics, with design focus on low capacitance, AEC-Q101 compliance, and compatibility with modern SMT assembly processes.
FAQ
What is the maximum clamping voltage of the VTVS47ASMF-HM3-08 under peak pulse conditions?
The VTVS47ASMF-HM3-08 clamps to a maximum of 80 V when subjected to its rated 4.76 A peak pulse current (10/1000 μs waveform). This value is measured at the device terminals and ensures downstream ICs experience voltage stress below their absolute maximum ratings during surge events. The clamping performance is guaranteed across −55 °C to +175 °C operating temperature.
Is the VTVS47ASMF-HM3-08 AEC-Q101 qualified?
The VTVS47ASMF-HM3-08 is offered in an AEC-Q101 qualified version - denoted by the "H" in the ordering code - and is fully tested per AEC-Q101-004 stress test conditions. This qualification validates its reliability for automotive applications including engine control units, ADAS sensors, and infotainment systems where extended temperature operation and long-term stability are mandatory.
What does the "HM3-08" suffix indicate in VTVS47ASMF-HM3-08?
In VTVS47ASMF-HM3-08, "H" indicates AEC-Q101 qualification, "M" denotes halogen-free construction, "3" specifies lead (Pb)-free tin plating, and "-08" means 3,000 units per 7-inch reel (8 mm tape, MOQ = 30,000). This full suffix confirms compliance with automotive material standards and supports automated SMT placement with industry-standard packaging.
Can VTVS47ASMF-HM3-08 be used on bidirectional signal lines like RS-485?
No - VTVS47ASMF-HM3-08 is a unidirectional TVS diode and must be used with anode grounded to protect positive-going transients only. For bidirectional lines such as RS-485, a symmetric dual-diode configuration or a dedicated bidirectional TVS (e.g., VTVS47BSMF-HM3-08) is required. Using VTVS47ASMF-HM3-08 on bidirectional lines risks forward conduction and signal distortion during negative excursions.
What is the thermal resistance (RthJL) of VTVS47ASMF-HM3-08, and how does it affect layout?
The VTVS47ASMF-HM3-08 has a junction-to-lead thermal resistance (RthJL) of 20 K/W when mounted on an infinite heat sink. In practice, this means PCB copper area connected to both terminals significantly improves power handling during repetitive surges. Layout best practice is to use ≥25 mm² of 2-oz copper pour per terminal, minimizing trace length to reduce inductance and maximize transient energy dissipation.
VTVS47ASMF-HM3-08 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Vishay General Semiconductor - Diodes Division
- Package/Case:
- DO-219AB
- Series:
- TransZorb®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Zener
- Unidirectional Channels:
- 1
- Bidirectional Channels:
- -
- Voltage - Reverse Standoff (Typ):
- 46.8V
- Voltage - Breakdown (Min):
- 53.2V
- Voltage - Clamping (Max) @ Ipp:
- 80V
- Current - Peak Pulse (10/1000µs):
- 4.76A
- Power - Peak Pulse:
- 400W
- Power Line Protection:
- No
- Applications:
- -
- Capacitance @ Frequency:
- 293pF @ 1MHz
- Operating Temperature:
- -55°C ~ 175°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q101
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DO-219AB (SMF)
VTVS47ASMF-HM3-08 FAQ
1.How can I place an order for VTVS47ASMF-HM3-08 through Aetrix?
Please submit a Request for Quotation (RFQ) for VTVS47ASMF-HM3-08 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for VTVS47ASMF-HM3-08 reliable?
The price and inventory of VTVS47ASMF-HM3-08 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VTVS47ASMF-HM3-08 is usually 5 days.
3.What payment methods are accepted for VTVS47ASMF-HM3-08?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VTVS47ASMF-HM3-08 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for VTVS47ASMF-HM3-08?
VTVS47ASMF-HM3-08 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your VTVS47ASMF-HM3-08 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for VTVS47ASMF-HM3-08?
For technical support, including VTVS47ASMF-HM3-08 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VTVS47ASMF-HM3-08 requirements.
6.How does Aetrix verify that VTVS47ASMF-HM3-08 is sourced from the original manufacturer or authorized distributors?
All VTVS47ASMF-HM3-08 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that VTVS47ASMF-HM3-08 meets industry standards.
7.What is the process for return or replacement of VTVS47ASMF-HM3-08?
All VTVS47ASMF-HM3-08 units undergo pre-shipment inspection (PSI). If there is an issue with VTVS47ASMF-HM3-08, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The VTVS47ASMF-HM3-08 part is unused and in its original packaging.
Return procedure for VTVS47ASMF-HM3-08:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
VTVS47ASMF-HM3-08 Tags
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